Seam-rubbing machine.



V. P. BUCK.

SEAM RUBBING MACHINE.

APPLICATION HLED MAY 24, 1911.

Patented July 13, 1915.

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VERTRUIDE P, BUCK, OF BOSTON, MASSACHUSETTS, ASSIGNOR T0 SI-IAWMUT MACHINERY COMPANY, 015 BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

Specification of Letters Patent.

SEAM-BUBBING' MACHINE.

Patented July 13, 1915.

To all whom. it, may concern Be it known that I, VERTRUDE P. BUCK, a citizen of the United States, residing at Boston, in the county of Suffolk, State of Massachusetts, haveinvented a certain new and useful Improvement in Seam-Rubbing Machines, of which the following is a specification, reference being had therein to the accompanying drawings. 7

The invention is designed'more especially for use in seam-rubbing machines, although not necessarily restricted'to employment in this precisevclass of machines, or in the precise connections hereinshownand described.

It consists, first, in a a fpower-treadle attachment which performs the work that heretofore has beenperformed by an ordinary foot-treadle in causing, a seam-rolling or rubbing tool to pressagainst the seam which isoperated upon, and thereby pro vides for the automatic performance by means of mechanically-applied power what heretofore has been performed'by thepressure. of the operators foot or hand.

The drawings show an embodiment of the invention in a seam-rolling or rubbing machine in the best formwhich I have yet contrived. K

In the d-rawings,-Figure 1 "shows the said machine in side elevat omthe supporting bench ortable being'in transverse section. Fig. 2 is a front elevation of themain parts of .the ,said'machine, parts being omitted, and a,portion of the, rack-guide ofthe powertreadle attachment being broken away. Fig. ,3 is a sectional detail of the moistenereattachment. Fig.4 shows in plan the collar which. is applied to the lower end of the plunger employed in connection with the supportingrod of the rolling or rubbing tool. 1

Having reference; to the wdrawings the machine isshown appliedfto a suitable supportingbench or table 1,.llpon which is mounted the 'base;p1ate 2 of the -,machine. The poweiatreadle attachmentis supposed to be mounted upon the floor. Thebaseplate 2 is furnishedwith uprights or. standards 2f, 2, provided with. bearings vat 3,3, for the operating shaft 4: of therubbing machine. The said shaft has inconnection therewith thefast pulley 5, andfiloose pulley 6 for the reception of asuitable drivingband, notshown. The saidshaft also has fixed upon one end thereof, outside the corresponding bearing 3, a face-plate 7 carryingthe crank-pin 8 from which the reciprocating movement of the tool is taken. To permit of giving differentlengths of stroke to the tool a series of holes 9, 9, are formed in the face-plate at different distances from the center of rotation. The crank-pin is set in the hole which will givethe length of stroke desired. With the crank-pinlls connected one end of a connecting-rod or link 10, the other end of which is connected pivotally witha block 11 made fast upon a rod 12 mounted in guides 13, 14, through which it is capable of reciprocating endwise. Upon the forward end of the said rod12 is mounted the tool-block 15 carrying the tool 16, the tool being-located below the rod. The toolblock is formed with a hole therethrough to receive the rod 12, and is secured in position upon the rod by means of a clamping-screw 18, the inner end of which engages with the upperportion of the rod, such portion being flattened so that the engagement of the inner end of the clamping-screw therewith holdsthe tool-block and tool from turning around on the rod. The tool-block and tool are capable of being shifted or adjusted lengthwise along the rod-relative to the'supporting form or horn 20 onwhich the work is'laid, so as to enable the tool to be located properly for,operating upon different portions of the work as required.

The character of the tool16 may vary accordin to the results to be secured in practice. X smooth roll journaled in the forked lower endof the. tool-block is shown in the drawings, it being intended to roll upon the work in being reciprocated, but the character of the surface of the roller may be varied as deemed desirable, and I do not limit myself to the use of a tool which rolls or turns, as a fiXed'tool may be employed instead.

tThe horn or formQO is supported by the bed-plate ofthe machine and projects forwail'd beneath. the path of movement of the too The bearings 13 and M are both connected pivotally with the supports therefor. The pivot 21 of the bearing 13 serves to connect a dependingportion of such bearing with the upwardly-extending lugs 22 of thebedplate 2, between which lugs the said depending portion of the bearing is fitted. A depending portion of the bearing 14 is received between the upwardly-extending portions of a fork. at the upper end of a vertical plunger 23, the said depending portion of the bearing 14 being connected to the said forks by the pivot 24. The plunger is fitted within a guide 25 at the front of the machine adjacent the horn or work-support 20, the said guide being in the form of an elongated bearing. Such bearing is provided mainly in a projection or boss extending down through openings in the bed-plate and bench. The plunger is capable of movement'endwise vertically through the said bearing or guide, the eXtent of its rise being limited to the contact of a stop-collar 26, which is fastened in place upon the lower portion of the plunger by the clampingscrew 27 with the lower end of the bearing or guide 25. 'The plunger is held normally in its highestposition, determined as just indicated by the contact of the stop-collar 26 with the lower end of the bearing or guide 25, by means of two contracting spiral springs 28, 28, each having the upper end thereof engaged with a stud or screw 29 projecting from the bearing or guide 25, and the lower end thereof engaged with a laterally projecting ear on the collar 30, (shown separately in Fig. 4), which is secured upon the plunger-23 below the stopcollar by means of a clamping-screw 31.

Through the action of the lifting springs in holding the plunger 23 and the guide 14 which is carried thereby in their highest position, the forward end of the rod 12 and the tool mounted thereon are maintained normally in a position elevated somewhat above the horn or work-support, so that in reciprocating while thus elevated the tool is entirely clear of the horn or work-support, thus afiording opportunity for the application of the work to the horn or work-support.

As thus far described the rubbing machine is the same as described and claimed by me in my application for United States Letters Patent therefor filed February 21, 1910, Serial No. 545,185 upon which Letters Patent No. 1,011,737 were granted under date of December 12, 1911.

For the purpose of enabling the tool to be depressed upon the work laid upon the horn or work-support, and held forcibly in contact therewith while acting upon the work, I provide a power-treadle attachment,

' one convenient form of which is shown in Figs. 1 and 2 of the drawings. The'construction and arrangement of the said power-treadle may vary in practice without involving departure from the principles and scope of my invention in its broad aspect. The form shown embodies specific features of invention. As shown, the said powertreadle attachment comprises a rack 32 which is mounted to move longitudinally in a guide-way in an upright standard 32 rising from-the bed-plate 33 of the attachment, a pinion 34 engaging with the rack and mounted to turn loosely upon a supporting-stud 35 fixed in a stand 36, a clutch-disk 37 in fixed connection with the said pinion, a second clutch-disk 38, friction material 39 between the two clutch-disks, a band-pulley .40 in connection with the second clutchdisk, the latter clutch-disk and its bandpulley turning freely upon the inner end of the stud 35, a pin 41 working through a guide in a stand 42 and making contact by the inner endthereof with the closed end of the hub of the clutch-member 38 or its pulley 40, and a treadle 43 pivoted at 44 and having an upturned arm for engagement with the outer end of the pin 41. The actuating clutch-member 38 is driven by means of a cord or band (not shown) from an operating pulley at some convenient point, such cord or band passing around the pulley 40, and the latter and the clutchmember 38 are continuously rotated thereby. The clutch normally is open. At such of strap or link-member 45 being engaged gaged with the lower end of the plunger. 1

The effective length of the link or connection constituted by the two strap or link members 45, 46, is adjusted by slackening the clamping-screw 48, sliding such members lengthwise relative to each other and to the collar 47 to secure the required length of link or connection, and tightening up the clamping-screw 48 again.

Pressure of the foot of the operator upon the horizontal portion of the treadle-lever 43, operating to close the clutch-members together, will cause the pinion 34 to be rotated, and thereby the said pinion through its engagement with the rack 32' will move the latter to draw the tool down upon the work. When the tool has found its place the contacting faces of the clutch-members will slip upon each other, the force transmitted to the clutch acting continuously, however, to keep up I the pull upon the tool so as to maintain the pressureuntil the pressure of'the operators footupon the'treadle is relieved. Re. laxation of the pressure of theoperators foot upon the lever Wlll PGIIIllt-tllfl clutchmembers to separate sufliciently to permit the tool to rise or otherwise retract and the rack to be restored to its normal uplifted position by the action of the springs 28, 28.

It will be perceived that anexceedingly slight movement of the foot-treadle, and only a moderate pressure of the operators foot upon the same, are all that is required in order to produce engagement of the clutclrmembers with each other, so that the excessive lifting of the foot of the operator, and the amount of efiort ordinarily necessary in the case of existing foot-treadles, are uncalled for. The degree of the pressure of the tool upon the work may be varied as required by varying the pressure of the operators foot upon the foot-treadle, so as to press the clutch-members 38 and 37 more or less firmly together, thereby varying the friction and the efficiency of the clutch. Thus the action of the tool is entirely within the control of the operator.

The forms of the parts of the power-attachment and of the treadle or lever for controlling the clutch, and the manner and means of connecting the attachment with the tool may be varied in practice. I do not limit myself to the specific form or character of the clutch, or with respect to, the manner of actuating the driving-member 38 thereof, or with respect to the means for connecting the driven member 37 thereof with the part to be operated. The powerattachment is not restricted to employment in the connection here shown. A difl'erent arrangement for closing the clutch-members together may be employed in practice.

I have shown herein a moistener-attachment by means of which moisture is applied to the rolling or rubbing tool in order that by means of the said tool it may be applied to the seam which is operated upon. The head 15 of the tool-carrier is chambered above the tool 16, namely at 151, to receive felt or other absorbent material 152. A passage leads upward from the chamber. A hole made transversely in the head 15 and communicating with the said passage receives the short pipe 50, Figs. 2 and 3, to the outer end of which is connected one end of a flexible water-supply pipe 51, the other end of which is connected with the nozzle 52 forming the outlet of a water-supply tank 53. A needle-valve 54 in connection with the head 15 of the tool-carrier controls the flow of water from the pipe 50 to the felt 152. From the latter the water finds its way to the tool, and by means of the tool finds its way to the seam which is operated upon. The flexible pipe 51 follows the tool-block in itsback and forth reciprocating. movements. At 54* is a wire support for the intermedi ate portion of the length of the said pipe.

WVhat is claimed as the invention is:

1. The combination with a tool-carrier, and means for continuously reciprocating the same, of a clutch having one member thereof provided with means for driving the'same and another member thereof frictionally driven from the first and operatively combined with the said tool-carrier, and when actuated operating to move the latter to carry the tool into position to en gage the work and also hold it in engagement with the work while reciprocating, and a manually-operated controller for said clutch.

2. The combination with a tool-carrier, and means for reciprocating the same, of a slip-drive clutch having coacting frictionmembers, one thereof provided with means for driving the same and another thereof driven from the first and operatively combined with the said tool-carrier and when actuated operating with an extent of slip controlled'by the operator to move the tool-carrier to carry the tool into position to engage the work and also hold it in engagement with the work while reciprocating, and a manually-operated controller for pressing said members into frictional engagement with each other.

3. The combination with a reciprocating tool, of a slip-drive friction-clutch, one member thereof provided with means for driving the same, and another member thereof frictionally actuated from the first and operatively combined with the said tool and, when'actuated, acting to move the tool against the work with a degree of power controlled by the operator, with a spring interposed between the latter member and the tool to render the pressure of the tool against the work yielding, and a manuallyoperated controller for said clutch.

4c- The combination with a machine-member having an idle position and a working position, and means for actuating said member, of a slip-drive friction-clutch having one member provided with means for driving the same and another member frictionally-driven from the first, operatively combined with the said machine-member, and acting, when actuated, to control the position thereof, and a manually-operated controller for said clutch.

5. The combination with a machine-member having an idle position and a working position in both of which it continues in motion, and means for actuating said member, of a clutch-member, a toothed member operatively connected with the said machine-member and in gear-connection with the said clutch member, a coacting driving clutch-member, said first-mentioned clutchmember, when actuated, operating. through said toothed member to move said machinemember up to its work, and a manually-operated controller for the clutch. Y

5 6. The combination with a tool-carrier having a reciprocating working stroke, of a driven member operatively combined with said tool-carrier to control the latters position while working, a power-actuated driv- 0 ing member adapted to have slip-drive connection with the said driven member, and a manually-operated controller by which the Copies of this iatent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

